2009 TOYOTA SIENNA fuel

465
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Effects of incorrect tire inflation pressure
Driving with incorrect ti
re inflation pressure ma y result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent re filling, have it checked by your Toyota dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours and has not been
driven for more than 1 mile or 1.5 km, you will get an accurate cold
tire inflation pressure reading.
●Always use a tire pressure gauge.
The appearance of the tire can be mi sleading. In addition, tire infla-
tion pressures that are even just a few pounds off can degrade ride
and handling.
●Do not bleed or reduce tire inflation pressure after driving. It is normal
for the tire inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle
is balanced.

478 4-3. Do-it-yourself maintenance
Fuse layout and amperage ratings■ Engine compartment
FuseAmpereCircuit
1 MAIN 30 A Headlights, daytime running light
system, H-LP RL, H-LP LL
2 AM2 30 A INJ, IGN, GAUGE 2
3 ETCS 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
4 DRL 20 A Daytime running light system,
H-LP RH, H-LP LH
5 DOOR NO.2 25 A Power door lock system
6 HORN 10 A Horns
7 DOME 10 A Personal/interior lights, vanity
lights, door courtesy lights, luggage
compartment light, engine switch
light, trip information display

479
4-3. Do-it-yourself maintenance
4
Maintenance and care
8 RAD NO.1 15 A Audio system
9 EFI NO.1 20 A
Multiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.2
10 ALT-S 7.5 A Charging system
11 HAZ 15 A Turn signal lights, emergency
flashers
12 ECU-B 10 A Power sliding door, air conditioning
system, power windows, multiplex
communication system, meter and
gauge, wireless remote control sys-
tem
13 H-LP RH 15 A Right-hand headlight
14 H-LP LH 15 A Left-hand headlight
15 RAD NO.3 30 A Audio system
16 EFI NO.2 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
17 A/F 25 A Multiport fuel injection system/
sequential multiport fuel injection
system
18 SPARE 15 A Spare fuse
19 SPARE 20 A Spare fuse
20 SPARE 30 A Spare fuse
21 SPARE 30 A Spare fuse
22 RR2 SEAT 50 A Power third seat
23 HTR 50 A Air conditioning system, A/C
24 FAN 50 A Electric cooling fans
25 PBD 30 A Power back door
26 R-PSD 30 A Right side power sliding door
FuseAmpereCircuit

480 4-3. Do-it-yourself maintenance
27 L-PSD30 A Left side power sliding door
28 RR A/C 40 A Rear air conditioning system
29 DEF 40 A Rear window defogger, MIR HTR
30 SPARE 7.5 A Spare fuse
31 ALT 140 ACharging system, RR A/C, HTR,
FAN, PBD, R-PSD, L-PSD, DEF
32 ABS1 50 AAnti-lock brake system, traction
control system, vehicle stability
control system
33 ABS2 30 AAnti-lock brake system, traction
control system, vehicle stability
control system
34 ST 30 A Starting system
35 L-RR2 SEAT 30 A Power third seat
36 R-RR2 SEAT 30 A Power third seat
37 H-LP RL 10 A Right-hand headlight (low beam)
38 H-LP LL 10 ALeft-hand headlight (low beam),
front fog lights
39 RSE 7.5 A Rear seat entertainment system
40 INJ 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
FuseAmpereCircuit

481
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Under the driver’s side instrument panel
FuseAmpereCircuit
1 MIR HTR 10 A Outside rear view mirror defoggers
2RAD2 7.5 A Audio system, navigation system,
rear seat entertainment system
3 PWR OUTLET 15 A Power outlets
4 CIG 15 A Cigarette lighter
5 ECU ACC 7.5 A Shift lock control system, air condi-
tioning system, power rear view
mirror control
6 GAUGE2 7.5 A Meter and gauge
7 IGN 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, multi-
plex communication system
8 IG2 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system
9 RR WIP 15 A Rear window wiper
10 WIP 30 A Windshield wiper and rear window
wiper
11 GAUGE1 10 A Back-up lights, turn signal lights,
emergency flashers
12 S-HTR 15 A Seat heaters

482 4-3. Do-it-yourself maintenance
13 WSH20 AWindshield washer and rear win-
dow washer
14 HTR 10 A Air conditioning system
15 ECU-IG 10 AIntuitive parking assist system, rear
view monitor system, multiplex
communication system, multiport
fuel injection system/sequential
multiport fuel injection system, anti-
lock brake system, traction control
system, vehicle stability control
system, shift lock control system,
dynamic laser cruise control sys-
tem, seat heaters, power back
door, moon roof, multi-information
display, auto anti-glare inside rear
view mirror, power windows, power
outlets (115 V), power third seat,
driving position memory system
16 PANEL 10 AAir conditioning system, seat heat-
ers, audio system, navigation sys-
tem, power sliding door, power
back door, trip information display,
rear window defogger, emergency
flashers, instrument panel lights,
steering switch lights
17 TAIL 10 AStop/tail lights, license plate lights,
parking lights, side maker lights
18 S/ROOF 25 A Moon roof
19 AC INV 15 A Power outlets (115 V)
20 FR DEF 15 A Windshield wiper de-icer
21 AM1 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, starter system
FuseAmpereCircuit

483
4-3. Do-it-yourself maintenance
4
Maintenance and care
22 STOP
10 AStop/tail lights, high mounted stop-
light, shift lock control system, anti-
lock brake system, traction control
system, vehicle stability control
system, multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system, multiplex
communication system
23 P/W 25 APower windows, power rear view
mirror
24 OBD 7.5 A On-board diagnosis system
25 FOG 15 A Front fog lights
26 P/VENT 15 A Power quarter windows
27 P/SEAT 30 A Power front seats
28 PWR 30 A Power windows
FuseAmpereCircuit

484 4-3. Do-it-yourself maintenance
■Under the passenger’s side instrument panel
FuseAmpereCircuit
1ST 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system
2 A/C 7.5 A Manual air conditioning system
3 SFT 5 A Shift lock control system
■ After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. ( P. 486)
● If the replaced fuse blows again, have the vehicle inspected by your
Toyota dealer.
■ If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.